"Battery cables"??? Plural?
Is that a guess?
The negative battery cable discussed many, many times in this Forum terminates near the front mounted battery location to the frame. Many recommend sanding both the negative cable end and the frame at the point of contact to insure a good electrical connection. Thus, there can only be one routed cable, the positive cable, to the rear of the car to the engine starter.
I defer to Rich or Dennis who undoubtedly know the answer, or if this is a stock routing.